CN2216057Y

CN2216057Y - Respiring device for acid or alkali storage tank

Info

Publication number: CN2216057Y
Application number: CN 94222143
Authority: CN
Inventors: 艾藻荪
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-16
Filing date: 1994-09-16
Publication date: 1995-12-27
Anticipated expiration: 2004-09-16

Abstract

The utility model relates to a respiring device for an acid and alkali storage tank. NaOH absorption liquid is contained in a container body of the respiring device for an acid and alkali storage tank, and a gas inlet pipe, an exhaust pipe and a pipeline for replenishing alkali liquid and water are arranged on the upper part of the container body. A check valve is connected to the middle part of an outer connecting pipe between the container body and the storage tank. The alkali liquid in the respiring container body quickly reacts with acid gas which is exhausted by the acid storage tank to prevent the acid gas from being exhausted into the air to pollute the environment and corrode other things. The alkali liquid also quickly reacts with CO2 in the air to prevent the air which is sent into the storage tank from containing the CO2 and reacting with alkali in the tank and prevent the degree of purity of the alkali from reducing.

Description

Respiring device for acid or alkali storage tank

The utility model belongs to the chemical plant class, relates to a kind of additional equipment of soda acid storagetank particularly.

Existing soda acid storagetank is not adorned breather apparatus mostly, and the acid gas in the sour storagetank evaporates, contaminated environment, corrosion nearby device.Alkali in the alkali storagetank then with airborne CO ₂Reaction: OH ⁺+ CO ₂→ HCO ^- ₃, reduced the purity of alkali, out of reach result of use.

In order to address the above problem, the people is arranged at the other water absorption system that is provided with of sour storagetank, but because water and acid gas sluggish, device structure is unreasonable in addition, does not have sorption at all.

The purpose of this utility model is intended to design a kind of breather apparatus that is used for the soda acid storagetank, and it can absorb acid gas when injecting acid in sour storagetank, can avoid alkali to store alkali in groove and airborne CO ₂Gas reaction descends the purity of alkali.

The purpose of this utility model realizes in the following manner, the breather apparatus that is used for the soda acid storagetank, its container body 5 and interior Sheng NaOH absorption liquid, freeing pipe 1 is arranged at container body top, replenish NaOH pipe 2, replenish water pipe 3, air inlet pipe 4, storage tank extension tube attached 7 connects non-return valve 6, and non-return valve communicates by in air inlet and

exhaust piper

4,1 and the container body.

The utility model is described with reference to the accompanying drawings.

Fig. 1 the utility model structural representation.

Fig. 2 acid storagetank respiratory system scheme drawing.

Fig. 3 alkali storagetank respiratory system scheme drawing.

Fig. 4 non-return valve structural representation.

With reference to Fig. 1,2, when in sour storagetank 8, injecting acid by feed pipe 9, close non-return valve 6.Storagetank includes the air of acid gas through storage tank extension tube attached 7, air inlet pipe 4, enters in the container body 5, and acid gas and caustic soda wherein react: H ⁺+ NaOH → Na ⁺+ H ₂O, the surplus air of institute is discharged from freeing pipe 1 again.

When with the acid solution in the sour storagetank 8 when drain pipe 11 is discharged, the groove internal gas pressure reduces, the NaOH in the container body can be inhaled in the groove.Can open non-return valve this moment, and air then enters from non-return valve bottom inflow pipe 10, replenishes air by storage tank extension tube attached 7 in groove, enters in the sour storagetank to stop NaOH.

With reference to Fig. 1,3, on storage tank extension tube attached 7, can connect a pipe and lead to water seal 12.When in alkali storagetank 8, injecting alkali, close non-return valve.Air unnecessary in the storagetank is discharged by water seal 12 backs.CO in the outside air ₂Gas, can only with NaOH in container body reaction, and not can with the alkali reaction in the alkali storagetank.

When with the alkali lye in the alkali storagetank 8 when drain pipe 11 is discharged, same air pressure reduces in the groove.Can open non-return valve this moment, is pressed into air from air inlet pipe 4 in container body, airborne CO ₂After then reacting with NaOH, and after freeing pipe 1, non-return valve 6, extension tube attached 7 enters in the groove, inwardly replenishes air.

Container body top also has the NaOH of replenishing pipe 2, replenishes water pipe 3, in order to inject NaOH, water in container body.

The utility model is simple in structure, and is reasonable in design, can absorb the acid gas of discharging in the sour storagetank rapidly, stops airborne CO ₂Alkali in gas and the alkali storagetank reacts, and is respond well.

Claims

1, the breather apparatus that is used for the soda acid storagetank, it is characterized in that containing in the container body (5) the NaOH absorption liquid, freeing pipe (1) is arranged at container body top, replenish NaOH pipe (2), replenish water pipe (3), air inlet pipe (4), storage tank extension tube attached (7) connects non-return valve (6), and non-return valve communicates by in air inlet and exhaust piper (4), (1) and the container body.

2, breather apparatus according to claim 1 is characterized in that the non-return valve lower end can tap into tracheae (10).

3, breather apparatus according to claim 1 is characterized in that can connecing on the storage tank extension tube attached (7) pipe and leads to water seal (12).